<template>
  <div class="swiper-container"  ref="mySwiper">
    <div class="swiper-wrapper">
      <div class="swiper-slide"  v-for="(skuImage,index) in skuImageList" :key="skuImage.id"
       >
        <img :src="skuImage.imgUrl" @click="changeImg(index)" :class="{active:nowIndex == index?true:false}">
      </div>
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>
import { mapGetters } from 'vuex'
  import Swiper from 'swiper'

  export default {
    name: "ImageList",
    props:['skuImageList'],
    data(){
      return {
        nowIndex:0
      }
    },
    methods:{
      changeImg(index){
        this.nowIndex = index
        this.$bus.$emit('nowIndex',index)

      }
    },
    watch:{
    skuImageList:{
      //bannerList一传过来就是有数据的。所以这里监视不到数据的改变，需要用immediate
      immediate:true,
      handler(newValue,oldValue){
       this.$nextTick(()=>{
        var mySwiper = new Swiper(this.$refs.mySwiper,{
            //如果需要分页器
            pagination:{
              el:".swiper-pagination",
            },
            //如果需要前进后退按钮
            navigation:{
              nextEl:".swiper-button-next",
              prevEl:".swiper-button-prev"
            },

            //显示几个图片设置
            slidesPerView:6,
            //每一次切换图片个数
            slidesPerGroup:1
        })
       })
      }
    }
  }
  }
</script>

<style lang="less" scoped>
  .swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
      width: 56px;
      height: 56px;

      img {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        &.active {
          border: 2px solid #f60;
          padding: 1px;
        }

        &:hover {
          border: 2px solid #f60;
          padding: 1px;
        }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>